7151328 has 120 divisors (see below), whose sum is σ = 21954240. Its totient is φ = 2280960.

The previous prime is 7151327. The next prime is 7151329. The reversal of 7151328 is 8231517.

7151328 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7151327) and next prime (7151329).

It is a super-2 number, since 2×7151328² = 102282984327168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7151327) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 80308 + ... + 80396.

It is an arithmetic number, because the mean of its divisors is an integer number (182952).

Almost surely, 2^7151328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7151328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10977120).

7151328 is an abundant number, since it is smaller than the sum of its proper divisors (14802912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7151328 is a wasteful number, since it uses less digits than its factorization.

7151328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 125 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 7151328 is about 2674.1967018153. The cubic root of 7151328 is about 192.6617788830.

The spelling of 7151328 in words is "seven million, one hundred fifty-one thousand, three hundred twenty-eight".